阅读说明：本技术 一种组分复杂的铜精矿的冶炼方法 (Smelting method of copper concentrate with complex components ) 是由 溪小凤 赵双红 李东波 杨鹏 张敏 李超航 周容乐 朱银 王艳波 普兴亮 于 2021-08-25 设计创作，主要内容包括：本发明涉及一种组分复杂的铜精矿的冶炼方法,包括：将不同矿种的铜精矿原料进行复混,得到一次配料混合矿；按预设比例,向部分一次配料混合矿中掺入中间流程物料,得到二次配料混合矿；以二次配料混合矿为原料进行冶炼,得到冰铜,对冰铜中杂质元素的含量进行检测,当述含量超过预设阈值时,将二次配料混合矿更换为一次配料混合矿。通过将不同种矿的原料进行复混,可以使原本多种组分的原料统一为组分较为均一的原料,从而使得入炉的原料组分不会出现大的波动,保证了生产流程的稳定性,通过向其中添加中间物料,可以对中间物料进行有序的消耗,根据冰铜中杂质的含量来对混合矿料进行调整,实现了对后端产品质量进行有效控制。(The invention relates to a smelting method of copper concentrate with complex components, which comprises the following steps: carrying out compound mixing on copper concentrate raw materials of different ore species to obtain primary ingredient mixed ore; according to a preset proportion, adding an intermediate process material into part of the primary mixed ore to obtain a secondary mixed ore; smelting by using secondary ingredient mixed ore as a raw material to obtain copper matte, detecting the content of impurity elements in the copper matte, and replacing the secondary ingredient mixed ore with primary ingredient mixed ore when the content exceeds a preset threshold value. Through carrying out the remixing with the raw materials of different kinds of ore, can make the raw materials of multiple composition unify to the raw materials that the composition is comparatively homogeneous to make the raw materials composition of going into the stove can not appear big fluctuation, guaranteed production flow's stability, through to wherein adding middle material, can carry out orderly consumption to middle material, come to adjust mixed mineral aggregate according to the content of impurity in the matte, realized carrying out effective control to rear end product quality.)

1. A smelting method of copper concentrate with complex components is characterized by comprising the following steps:

carrying out compound mixing on copper concentrate raw materials of different ore species to obtain primary ingredient mixed ore;

according to a preset proportion, doping intermediate process materials into part of the primary burdening mixed ore to obtain secondary burdening mixed ore;

and smelting the secondary ingredient mixed ore serving as a raw material to obtain copper matte, detecting the content of impurity elements in the copper matte, and when the content exceeds a preset threshold value, replacing the secondary ingredient mixed ore into the primary ingredient mixed ore.

2. The method for smelting copper concentrate with complex components according to claim 1, wherein the step of re-mixing the copper concentrate raw materials of different ore species to obtain a primary batch mixed ore specifically comprises:

obtaining component analysis results of copper concentrate raw materials of different ore species, and carrying out metallurgical batching calculation according to the component analysis results to obtain a primary batching list;

and mixing the raw materials of different ore types according to the primary batching sheet to obtain the primary batching mixed ore.

3. The method of smelting copper concentrate having complex compositions according to claim 1, wherein the intermediate process stream material has the composition: copper: 0.5-15%, iron: 1.0-25%, sulfur: 0.5-25%, silica: 0.5-25%, arsenic: 0.05-15%, lead: 0.5-25%, zinc: 1-30%, bismuth: 0.1-3.0%, magnesium oxide: 0.5-5.9%, water: 6 to 10 percent.

4. The method for smelting copper concentrate with complex components according to claim 3, wherein an intermediate process material is mixed into a part of the primary batch mixed ore according to a preset proportion to obtain a secondary batch mixed ore, wherein the mass ratio of the primary batch to the intermediate process material is 4-6: 1.

5. The method for smelting copper concentrate with complex components according to claim 1, wherein the primary batch mixed ore comprises the following components in percentage by mass: copper: 15-22%, iron: 10-25%, sulfur: 10-25%, silica: 5-25%, arsenic: 0.15-1.5%, lead: 0.5-2.5%, zinc: 1-3.5%, bismuth: 0.1-0.30%, magnesium oxide: 0.5-1.5%, water: 6 to 10 percent.

6. The method for smelting the copper concentrate with complex components according to claim 1, wherein the mass fraction of sulfur contained in the secondary batch mixed ore is 12 to 15%, the mass fraction of arsenic contained in the secondary batch mixed ore is 0.5 to 0.85%, and the mass fractions of lead and zinc contained in the secondary batch mixed ore are less than 3.5%.

7. The method for smelting copper concentrate with complex components according to claim 1, wherein the secondary batch mixed ore comprises the following components in percentage by mass: copper: 15-22%, iron: 10-25%, sulfur: 10-25%, silica: 5-25%, arsenic: 0.15-1.5%, lead: 0.5-2.5%, zinc: 1.5-3.5%, bismuth: 0.1-0.30%, magnesium oxide: 0.5-1.5%, water: 6 to 10 percent.

8. The method according to claim 1, wherein the method for smelting the copper concentrate with complex components comprises the steps of smelting the secondary batch mixed ore as a raw material to obtain matte, detecting the content of impurity elements in the matte, and replacing the secondary batch mixed ore with a primary batch mixed ore when the content exceeds a preset threshold, and further comprises:

and detecting the content of the impurity elements in the matte, and when the content is lower than a preset threshold value, replacing the primary ingredient mixed ore with a secondary ingredient mixed ore.

9. The method of smelting a compositionally complex copper concentrate according to claim 1, wherein the impurity element is bismuth.

10. The method according to claim 9, wherein the predetermined threshold value is 0.1%.

Technical Field

The invention relates to the technical field of metal smelting, in particular to a smelting method of copper concentrate with complex components.

Background

When the copper is smelted by a pyrometallurgical method, more impurity elements can influence the quality of the blister copper. The existing copper concentrate has the problems of poor quality level of copper content and more copper ore sources, so that the fluctuation of the impurity types and the content of the ore materials entering a furnace is large, the stability of the production flow is poor, and the matte component is easy to deviate.

Therefore, the prior art is still subject to further improvement.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a method for smelting copper concentrate with complex components, and aims to solve the problem that the matte component is easy to deviate in the smelting process due to more kinds of ore sources of the copper concentrate and large fluctuation of the copper content.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a method of smelting a copper concentrate of complex composition, wherein the method comprises:

carrying out compound mixing on copper concentrate raw materials of different ore species to obtain primary ingredient mixed ore;

according to a preset proportion, doping intermediate process materials into part of the primary burdening mixed ore to obtain secondary burdening mixed ore;

and smelting the secondary ingredient mixed ore serving as a raw material to obtain copper matte, detecting the content of impurity elements in the copper matte, and when the content exceeds a preset threshold value, replacing the secondary ingredient mixed ore into the primary ingredient mixed ore.

Optionally, the method for smelting copper concentrate with complex components includes the step of re-mixing copper concentrate raw materials of different ore species to obtain a primary batch mixed ore, and specifically includes:

obtaining component analysis results of copper concentrate raw materials of different ore species, and carrying out metallurgical batching calculation according to the component analysis results to obtain a primary batching list;

and carrying out compound mixing on the copper concentrate raw materials of different ore types according to the primary batching sheet to obtain primary batching mixed ore.

Optionally, the smelting method of the copper concentrate with complex components comprises the following components: copper: 0.5-15%, iron: 1.0-25%, sulfur: 0.5-25%, silica: 0.5-25%, arsenic: 0.05-15%, lead: 0.5-25%, zinc: 1-30%, bismuth: 0.1-3.0%, magnesium oxide: 0.5-5.9%, water: 6 to 10 percent. .

Optionally, in the method for smelting copper concentrate with complex components, an intermediate process material is mixed into a part of the primary mixed burden ore according to a preset proportion to obtain a secondary mixed burden ore, wherein the mass ratio of the primary mixed burden material to the intermediate process material is 4-6: 1.

Optionally, the method for smelting copper concentrate with complex components includes the following components by mass percent: copper: 15-22%, iron: 10-25%, sulfur: 10-25%, silica: 5-25%, arsenic: 0.15-1.5%, lead: 0.5-2.5%, zinc: 1-3.5%, bismuth: 0.1-0.30%, magnesium oxide: 0.5-1.5%, water: 6 to 10 percent.

Optionally, the smelting method of the copper concentrate with complex components includes that the secondary mixed ore is 12% -15% in sulfur content, 0.5% -0.85% in arsenic content and less than 3.5% in lead and zinc content.

Optionally, the smelting method of the copper concentrate with complex components includes the following components by mass percent: copper: 15-22%, iron: 10-25%, sulfur: 10-25%, silica: 5-25%, arsenic: 0.15-1.5%, lead: 0.5-2.5%, zinc: 1.5-3.5%, bismuth: 0.1-0.30%, magnesium oxide: 0.5-1.5%, water: 6 to 10 percent.

Optionally, the method for smelting a copper concentrate with complex components, where the secondary batch mixed ore is used as a raw material to be smelted to obtain matte, the content of impurity elements in the matte is detected, and when the content exceeds a preset threshold, the step of replacing the secondary batch mixed ore with the primary batch mixed ore further includes:

and detecting the content of the impurity elements in the matte, and when the content is lower than a preset threshold value, replacing the primary ingredient mixed ore with a secondary ingredient mixed ore.

Optionally, the method for smelting copper concentrate with complex components comprises the step of smelting the copper concentrate with complex components, wherein the impurity element is bismuth.

Optionally, the smelting method of the copper concentrate with the complex components is characterized in that the preset threshold is 0.1%.

Has the advantages that: the smelting method of the copper concentrate with complex components, provided by the invention, comprises the steps of re-mixing raw materials of different ore types to obtain mixed ore with uniform components, doping a part of the mixed ore with an intermediate process material according to a certain doping proportion to obtain secondary burdening mixed ore, smelting by taking the secondary burdening mixed ore as a raw material, detecting the content of impurity elements in the obtained matte, stopping the secondary burdening mixed ore when the content of the impurity elements exceeds a preset value, and using the primary burdening mixed ore instead. Through carrying out the remixing with the raw materials of different kinds of ore, can make the raw materials of multiple composition unify to the raw materials that the composition is comparatively homogeneous to make the raw materials composition of going into the stove can not appear big fluctuation, guaranteed production flow's stability, through to wherein adding middle material, can carry out orderly consumption to middle material, come to adjust mixed mineral aggregate according to the content of impurity in the matte, realized carrying out effective control to rear end product quality.

Drawings

FIG. 1 is a schematic flow chart of a smelting method of copper concentrate with complex components, which is provided by the embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The 'miscellaneous ores' are primary ingredient mixed ores; the mixed flow ore is the secondary ingredient mixed ore; the process material return is the intermediate process material.

In the pyrometallurgical process, the stable control of the ingredients of the materials entering the furnace is a precondition for ensuring the stable production. Copper concentrates of different mining areas obtained after the conventional ore dressing still contain more impurity elements, the content of impurities is continuously increased, the copper-containing grade of the copper concentrates is continuously reduced, and meanwhile, the quality of the copper concentrates of different mining areas is also uneven, so that the production stability is poor, the obtained crude copper component has deviation, and the quality of the crude copper is influenced.

In order to solve the technical problem, the invention discloses a method for smelting copper concentrate with complex components, as shown in figure 1, the method comprises the following steps:

and S10, remixing the copper concentrate raw materials of different ore species to obtain the primary burdening mixed ore.

Specifically, the copper concentrate raw materials of different ore species refer to copper concentrate raw materials from different mining areas with different ore components, and it is easily understood that the copper content grades of the copper concentrates of different mining areas are different, wherein the impurity components have larger differences, such as higher moisture content, smaller particle size, higher sulfur content and the like. In order to process the raw materials of different ore types uniformly, they may be mixed (i.e., remixed) to obtain a primary batch mixed ore (mixed ore).

In this embodiment, the blending of the raw materials of different ore species may be performed by the following steps:

s100, obtaining component analysis results of copper concentrate raw materials of different ore species, and carrying out metallurgical batching calculation according to the analysis results to obtain a primary batching list;

and S110, remixing the copper concentrate raw materials of different ore types according to the primary batching list to obtain primary batching mixed ore.

In this embodiment, a fluorescence analysis method may be adopted to perform fluorescence analysis on the copper concentrate raw material of each mineral species to obtain a component analysis result of each mineral species, and a batch sheet is calculated by using a batch calculation model according to different fluorescence analysis results in combination with the charging demand and the impurity control upper limit.

Illustratively, copper concentrates of three different mining areas, namely autogenous ores, high-arsenopyrite ores and high-lead-zinc ores, are stacked on site, and fluorescence analysis is performed on copper, iron, sulfur, silicon, arsenic, lead, zinc, antimony, bismuth, nickel, calcium oxide, magnesium oxide, aluminum oxide and water of the three mining areas by sampling respectively, and the results are as follows:

self-produced ore Cu: 21%, Fe: 24%, S: 32% SiO₂：8％、As：0.15％、Pb：0.65％、Zn：0.90％、Bi：0.12％、MgO：0.07％、H₂O: 8.51 percent; high arsenic ore copper Cu: 12%, Fe: 21%, S: 13% SiO₂：12％、As：1.6％、Pb：1.75％、Zn：2.50％、Bi：0.07％、MgO：0.89％、H₂O: 8.5 percent; high lead zinc ore copper Cu: 22%, Fe: 24%, S: 32% SiO₂：2.5％、As：0.25％、Pb：5％、Zn：9％、Bi：0.15％、MgO：0.55％、H₂O：9.31％。

According to the fluorescence analysis result, a batching calculation model is utilized, a batching list is calculated, namely, a batching mixed ore component is required for one time, Cu: 15-22%, Fe: 10-25%, S: 10-25% of SiO₂：5-25％、As：0.15-1.5％、Pb：0.5-2.5％、Zn：1-3.5％、Bi：0.1-0.30％、MgO：0.5-1.5％、H₂O：6-10％。

And S20, doping the intermediate process material into part of the primary burdening mixed ore according to a preset proportion to obtain a secondary burdening mixed ore.

Specifically, the obtained primary batch mixed ore may be divided into two parts, one of which is mixed with the intermediate process material and the other of which is not mixed. The intermediate process material is a material which has the characteristics of low sulfur and high impurity elements of arsenic, lead, zinc, bismuth and calcium, and is an intermediate material generated in the smelting process. If not utilized, a large amount of production field is occupied. The material is added into the primary ingredient mixed ore, so that the stability of the primary ingredient mixed ore can be improved.

In this embodiment, the preset ratio refers to a mass ratio of the primary ingredient to the intermediate process material. The mass ratio may be 4:1,5:1,6:1, etc.

Illustratively, the intermediate process material and the primary burden are mixed according to the proportion of 4:1 to obtain a secondary burden mixed ore, wherein the mass fraction of sulfur is 12-15%, the mass fraction of arsenic is 0.5-0.85%, and the mass fractions of lead and zinc are below 3.5%. Copper: 15-22%, iron: 10-25%, sulfur: 10-25%, silica: 5-25%, arsenic: 0.15-1.5%, lead: 0.5-2.5%, zinc: 1.5-3.5%, bismuth: 0.1-0.30%, magnesium oxide: 0.5-1.5%, water: 6 to 10 percent.

In this embodiment, through secondary blending (doping intermediate process material), the intermediate process material can be consumed, thereby avoiding accumulation and waste.

S30, smelting the secondary ingredient mixed ore serving as a raw material to obtain copper matte, detecting the content of impurity elements in the copper matte, and when the content exceeds a preset threshold value, replacing the secondary ingredient mixed ore with the primary ingredient mixed ore.

Specifically, smelting is carried out by taking secondary ingredient mixed ore (doped with middle process material) as charging raw material, sampling and analyzing matte generated in a later section, and when the impurity content in the matte exceeds a preset threshold value, stopping the secondary ingredient mixed ore and using primary ingredient mixed ore as charging raw material. The impurity content in the copper matte in the later working section is adjusted by replacing the raw materials entering the furnace. On the premise of ensuring the stability of the production process, the components of the matte are adjusted, so that the small ore type complex raw materials are continuously consumed, the intermediate materials are uniformly consumed, and the problems of ordered consumption of the existing complex raw materials and effective control of the quality of rear-end products are solved. It is easy to understand that, in this embodiment, the detection of the content of the impurities in the matte is performed multiple times, for example, sampling is performed three times at intervals, and according to the comparison between the detection results of the three times and the preset threshold, when the detection results of the three times exceed the threshold, it indicates that the impurities in the matte exceed the standard, the secondary blending mixed ore is stopped, and the primary blending mixed ore is used instead.

In this embodiment, the impurity element in the matte refers to metal bismuth, and the high content of bismuth affects the performance of the blister copper and is not beneficial to the smelting of the refined copper. The threshold may be 0.1%, i.e. the bismuth content in the matte is controlled to be within 0.1%.

In an implementation manner of this embodiment, the step S30 further includes the following steps:

and S40, detecting the content of the impurity elements in the matte, and when the content is lower than a preset threshold value, replacing the primary ingredient mixed ore with a secondary ingredient mixed ore.

Namely, when the bismuth content in the copper matte in the later working section is within the control range, the raw materials entering the furnace are switched into secondary ingredient mixed ore, so that the materials in the intermediate flow are consumed in a balanced manner.

The method of smelting a copper concentrate having a complex composition according to the present invention is further illustrated by the following specific examples.

Example 1

The treatment capacity of the mixed ore is 2880 tons every day from 11 months 1 days to 11 months 15 days in 2020, wherein the treatment capacity of the mixed ore and the mixed flow ore is 300 tons every day, and 6 materials of the self-produced ore, the high arsenic ore, the high lead zinc ore, the high silicon ore, the high bismuth ore and the intermediate process material are mixed and matched according to the mass percentage.

A 'tramp' dichotomy for continuously treating complex copper concentrate without affecting intermediate material consumption, the method comprising the steps of:

1) sampling and analyzing copper concentrates of different ore points, and stacking in a piling way: according to the ratio of autogenous ore Cu: 20%, Fe: 26%, S: 30%, SiO 2: 7%, As: 0.15%, Pb: 0.55%, Zn: 0.80%, Bi: 0.02%, MgO: 0.04% and H₂O: 7.51 percent; high arsenic ore copper Cu: 11%, Fe: 20%, S: 15% SiO₂：15％、As：1.5％、Pb：1.55％、Zn：2.80％、Bi：0.09％、MgO：0.89％、H₂O: 8.5 percent; (ii) a High lead zinc ore copper Cu: 22%, Fe: 23%, S: 31% SiO₂：3％、As：0.23％、Pb：4％、Zn：8％、Bi：0.12％、MgO：0.54％、H₂O: 9.31 percent; (ii) a High silicon ore copper Cu: 18%, Fe: 19%, S: 5% SiO₂：35％、As：0.06％、Pb：0.89％、Zn：1.80％、Bi：0.08％、MgO：0.56％、H₂O: 6.78 percent; (ii) a High bismuth ore copper Cu: 20%, Fe: 26%, S: 28% SiO₂: 7%, As: 0.15%, Pb: 1.55%, Zn: 1.80%, Bi: 0.22%, MgO: 0.98%, H2O: 8 percent; (ii) a Intermediate process material Cu: 12%, Fe: 11%, S: 7%, SiO 2: 1%, As: 3.15%, Pb: 7%, Zn: 11%, Bi: 0.32%, MgO: 0.1%, H₂O: and 10 percent, piling the 6 kinds of concentrate according to the components, and strictly prohibiting mixed piling.

2) According to the fluorescence analysis result detected by the ore species, the primary ingredient is obtained by using the ingredient calculation modelSingly: and (3) performing metallurgical batching calculation according to the result detected by fluorescence analysis of the raw material, wherein the mixed concentrate is required to have the following components: cu: 15-22%, Fe: 10-25%, S: 10-25% of SiO₂：5-25％、As：0.15-1.5％、Pb：0.5-2.5％、Zn：1-3.5％、Bi：0.1-0.30％、MgO：0.5-1.5％、H₂O: 6-10%, calculating the optimal proportion;

3) according to the primary batching list, turning and batching multiple piles of ore seeds according to the batching list proportion to obtain primary batching mixed ore with uniform components, which is collectively called as 'miscellaneous ore': according to the calculated optimal mixture ratio, 100 tons of self-produced ore, 50 tons of high arsenic ore, 50 tons of high lead zinc ore, 60 tons of high silicon ore and 40 tons of high bismuth ore are produced; the amount of concentrate in each bucket of the loader is calculated according to 5 tons/bucket, the minimum proportion of 20 buckets of self-produced ore, 10 buckets of high-arsenic ore, 10 buckets of high-lead zinc ore, 12 buckets of high-silicon ore and 8 buckets of high-bismuth ore is 10:5:5:6:4, so that the optimal circulation sequence sequentially comprises 10 buckets of self-produced ore, 5 buckets of high-arsenic ore, 5 buckets of high-lead zinc ore, 6 buckets of high-silicon ore and 4 buckets of high-bismuth ore;

4) performing secondary distribution on the 'mixed ore', wherein one ore is 'pure mixed ore' without 'process return material', and the other ore is 'mixed ore' with 'process return material'; the proportion of the pure and mixed ore is shown in the step 3), and according to the calculated optimal proportion, Cu: 15-22%, Fe: 10-25%, S: 10-25% of SiO₂：5-25％、As：0.15-1.0％、Pb：0.5-2.0％、Zn：1-3.5％、Bi：0.1-0.20％、MgO：0.5-1.5％、H₂O: 6-10% of 100 tons of self-produced ore, 50 tons of high-arsenic ore, 50 tons of high-lead zinc ore, 60 tons of high-silicon ore and 40 tons of high-bismuth ore; the amount of concentrate in each bucket of the loader is calculated according to 5 tons/bucket, the minimum proportion of 20 buckets of self-produced ore, 10 buckets of high-arsenic ore, 10 buckets of high-lead zinc ore, 12 buckets of high-silicon ore and 8 buckets of high-bismuth ore is 10:5:5:6:4, so that the optimal circulation sequence sequentially comprises 10 buckets of self-produced ore, 5 buckets of high-arsenic ore, 5 buckets of high-lead zinc ore, 6 buckets of high-silicon ore and 4 buckets of high-bismuth ore; blending 'mixed ore' of 'process return material' according to the calculated optimal proportion, wherein 'mixed ore' Cu: 15-22%, Fe: 10-25%, S: 10-25% of SiO₂：5-25％、As：0.15-1.5％、Pb：0.5-2.5％、Zn：1.5-3.5％、Bi：0.15-0.30％、MgO：0.5-1.5％、H₂O: 6-10% of mineral produced per 100 tons50 tons of high-arsenic ore, 50 tons of high-lead-zinc ore, 60 tons of high-silicon ore and 40 tons of high-bismuth ore; the amount of concentrate of each bucket of the loader is calculated according to 5 tons/bucket, the minimum proportion of 16 buckets of the self-produced ore, 10 buckets of the high arsenic ore, 10 buckets of the high lead zinc ore, 12 buckets of the high silicon ore, 6 buckets of the high bismuth ore and 6 buckets of the intermediate process material is 8:5:6:6:3:3, so that the optimal circulation sequence sequentially comprises 8 buckets of the self-produced ore, 5 buckets of the high arsenic ore, 6 buckets of the high lead zinc ore, 6 buckets of the high silicon ore, 3 buckets of the high bismuth ore and 3 buckets of the intermediate process material.

5) When the impurity elements of the back-end matte are continuously exceeded, the 'mixed flow ore' is stopped from being added, and the 'mixed ore' with the same proportion is used instead of being used, so that the problem of exceeding of the impurity elements of the back-end matte is solved, and the complex raw materials and the intermediate materials are continuously consumed. 1-11-3 days in 11 months, the bismuth content of the electric furnace copper matte samples continuously exceeds four standards, the mixed ore of 12 percent is suspended for use, the pure mixed ore of the same proportion is used for use, and the bismuth content of the electric furnace copper matte sample is reduced to 0.10 percent in 11 months and 4 days, and the mixed ore is continuously consumed in a controllable range without forming a dull stock.

Example 2

The treatment capacity of the mixed ore is 2880 tons every day from 12 months 1 days to 12 months 15 days in 2020, wherein the treatment capacity of the mixed ore and the mixed flow ore is 300 tons every day, and 6 materials of the self-produced ore, the high arsenic ore, the high lead zinc ore, the high silicon ore, the high bismuth ore and the intermediate process material are mixed and matched according to the mass percentage.

A 'tramp' dichotomy for continuously treating complex copper concentrate without affecting intermediate material consumption, the method comprising the steps of:

1) sampling and analyzing copper concentrates of different ore points, and stacking in a piling way: according to the ratio of autogenous ore Cu: 20%, Fe: 26%, S: 30% SiO₂：7％、As：0.15％、Pb：0.55％、Zn：0.80％、Bi：0.02％、MgO：0.04％、H₂O: 7.51 percent; high arsenic ore copper Cu: 11%, Fe: 20%, S: 15% SiO₂: 15%, As: 1.5%, Pb: 1.55%, Zn: 2.80%, Bi: 0.09%, MgO: 0.89%, H2O: 8.5 percent; (ii) a High lead zinc ore copper Cu: 22%, Fe: 23%, S: 31% SiO₂：3％、As：0.23％、Pb：4％、Zn：8％、Bi：0.12％、MgO：0.54％、H₂O: 9.31 percent; (ii) a High silicon ore copper Cu: 18%, Fe: 19%, S: 5% SiO₂：35％、As：0.06％、Pb：0.89％、Zn：1.80％、Bi：0.08％、MgO：0.56％、H₂O: 6.78 percent; (ii) a High bismuth ore copper Cu: 20%, Fe: 26%, S: 28%, SiO 2: 7%, As: 0.15%, Pb: 1.55%, Zn: 1.80%, Bi: 0.22%, MgO: 0.98% and H₂O: 8 percent; (ii) a Intermediate process material Cu: 12%, Fe: 11%, S: 7% SiO₂：1％、As：3.15％、Pb：7％、Zn：11％、Bi：0.32％、MgO：0.1％、H₂O: and 10 percent, piling the 6 kinds of concentrate according to the components, and strictly prohibiting mixed piling.

2) According to the fluorescence analysis result detected by the ore species, a batching calculation model is utilized to obtain a batching list: and (3) performing metallurgical batching calculation according to the result detected by fluorescence analysis of the raw material, wherein the mixed concentrate is required to have the following components: cu: 15-22%, Fe: 10-25%, S: 10-25% of SiO₂：5-25％、As：0.15-1.5％、Pb：0.5-2.5％、Zn：1-3.5％、Bi：0.1-0.30％、MgO：0.5-1.5％、H₂O: 6-10%, calculating the optimal proportion;

3) according to the primary batching list, turning and batching multiple piles of ore seeds according to the batching list proportion to obtain primary batching mixed ore with uniform components, which is collectively called as 'miscellaneous ore': according to the calculated optimal mixture ratio, 100 tons of self-produced ore, 50 tons of high arsenic ore, 50 tons of high lead zinc ore, 60 tons of high silicon ore and 40 tons of high bismuth ore are produced; the amount of concentrate in each bucket of the loader is calculated according to 5 tons/bucket, the minimum proportion of 20 buckets of self-produced ore, 10 buckets of high-arsenic ore, 10 buckets of high-lead zinc ore, 12 buckets of high-silicon ore and 8 buckets of high-bismuth ore is 10:5:5:6:4, so that the optimal circulation sequence sequentially comprises 10 buckets of self-produced ore, 5 buckets of high-arsenic ore, 5 buckets of high-lead zinc ore, 6 buckets of high-silicon ore and 4 buckets of high-bismuth ore;

4) performing secondary distribution on the 'mixed ore', wherein one ore is 'pure mixed ore' without 'process return material', and the other ore is 'mixed ore' with 'process return material'; the proportion of the pure and mixed ore is shown in the step 3), and according to the calculated optimal proportion, Cu: 15-22%, Fe: 10-25%, S: 10-25% of SiO₂：5-25％、As：0.15-1.0％、Pb：0.5-2.0％、Zn：1-3.5％、Bi：0.1-0.20％、MgO：0.5-1.5％、H₂O: 6-10% of 100 tons of self-produced ore, 50 tons of high-arsenic ore, 50 tons of high-lead zinc ore, 60 tons of high-silicon ore and 40 tons of high-bismuth ore; the amount of concentrate in each bucket of the loader is calculated according to 5 tons/bucket, the minimum proportion of 20 buckets of self-produced ore, 10 buckets of high-arsenic ore, 10 buckets of high-lead zinc ore, 12 buckets of high-silicon ore and 8 buckets of high-bismuth ore is 10:5:5:6:4, so that the optimal circulation sequence sequentially comprises 10 buckets of self-produced ore, 5 buckets of high-arsenic ore, 5 buckets of high-lead zinc ore, 6 buckets of high-silicon ore and 4 buckets of high-bismuth ore; blending 'mixed ore' of 'process return material' according to the calculated optimal proportion, wherein 'mixed ore' Cu: 15-22%, Fe: 10-25%, S: 10-25% of SiO₂：5-25％、As：0.15-1.5％、Pb：0.5-2.5％、Zn：1.5-3.5％、Bi：0.15-0.30％、MgO：0.5-1.5％、H₂O: 6-10% of 100 tons of self-produced ore, 50 tons of high-arsenic ore, 50 tons of high-lead zinc ore, 60 tons of high-silicon ore and 40 tons of high-bismuth ore; the amount of concentrate of each bucket of the loader is calculated according to 5 tons/bucket, the minimum proportion of 16 buckets of the self-produced ore, 10 buckets of the high arsenic ore, 10 buckets of the high lead zinc ore, 12 buckets of the high silicon ore, 6 buckets of the high bismuth ore and 6 buckets of the intermediate process material is 8:5:6:6:3:3, so that the optimal circulation sequence sequentially comprises 8 buckets of the self-produced ore, 5 buckets of the high arsenic ore, 6 buckets of the high lead zinc ore, 6 buckets of the high silicon ore, 3 buckets of the high bismuth ore and 3 buckets of the intermediate process material.

5) When the impurity elements of the back-end matte are continuously exceeded, the 'mixed flow ore' is stopped from being added, and the 'mixed ore' with the same proportion is used instead of being used, so that the problem of exceeding of the impurity elements of the back-end matte is solved, and the complex raw materials and the intermediate materials are continuously consumed. And (3) from 12 months 5 days to 12 months 8 days, the bismuth content of the electric furnace matte sample is less than 0.1%, the matched 10% of pure miscellaneous ores is suspended for matching, the same proportion of miscellaneous-flow ores is used for matching, from 12 months 9 days to 12 months 15 days, the bismuth content of the electric furnace matte sample does not exceed the standard, and the 'process return materials and miscellaneous ores' are orderly consumed within a controllable range.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.